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Metallurgist
Erschienen in: Metallurgist 7-8/2017

24.11.2017

Creep Deformation of Carbon-Based Cathode Materials for Low-Temperature Aluminum Electrolysis

verfasst von: Wei Wang, Weijie Chen, Wanduo Gu

Erschienen in: Metallurgist | Ausgabe 7-8/2017

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Abstract

The uniaxial-compression creep behavior of semi-graphitic carbon products was investigated using modified Rapoport equipment in a K3AlF6–Na3AlF6–AlF3 and a Na3AlF6–AlF3 system. The stress exponent is low for the K3AlF6–Na3AlF6–AlF3 system in the steady-state creep stage. With an increase in graphitization degree and grain size, the interlayer space and porosity of the tested samples decrease after aluminum electrolysis. A low temperature can suppress carbon-cathode damage. Based on these stress exponents and a microstructural investigation using transmission electron microscopy, it is proposed that dislocation glide is the dominant creep mechanism for the carbon cathode during aluminum electrolysis in the steady-state creep stage.
Vorheriger Artikel Comparative Study of Behavior of Lumpy, Small Lumpy, and Lean Chrome Ores During Reduction at Different Temperatures

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Metadaten
Titel
Creep Deformation of Carbon-Based Cathode Materials for Low-Temperature Aluminum Electrolysis
verfasst von
Wei Wang
Weijie Chen
Wanduo Gu
Publikationsdatum
24.11.2017
Verlag
Springer US
Erschienen in
Metallurgist / Ausgabe 7-8/2017
Print ISSN: 0026-0894
Elektronische ISSN: 1573-8892
DOI
https://doi.org/10.1007/s11015-017-0555-0

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